A dry hydrocolloid powder with cold-gel capabilities is produced by:
dissolving a hydrocolloid comprising polysaccharide chains in an aqueous
solution; heating the dissolved hydrocolloid solution to a temperature
and for a time sufficient to induce a substantial alteration in the
tertiary structure of the polysaccharide chains of the hydrocolloid;
cooling the dissolved hydrocolloid solution to a temperature and for a
time sufficient to substantially return the polysaccharide chains of the
hydrocolloid to their original tertiary structure, wherein the
polysaccharide chains form a gelling network; and drying the cooled
hydrocolloid solution to form a dry powder. In some embodiments, the dry
powder has a viscosity of between about 10 and 40 mPa-s when
reconstituted in a 2% weight/weight solution at 25 degrees C. In other
embodiments, the dry powder has a water absorption of greater than 20 g
H.sub.2O/g powder.